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Finding the Fourth Proportional to 270,603.27, 405,896.54 and 128,550.80

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Solution

The fourth proportional to 270,603.27, 405,896.54 and 128,550.80 is: 192,822.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,603.27 : 405,896.54 = 128,550.80 : x
  2. Step 2: Convert to fraction form
    270,603.27/405,896.54 = 128,550.80/x
  3. Step 3: Cross multiply
    270,603.27x = 405,896.54 × 128,550.80
  4. Step 4: Simplify right side
    270,603.27x = 52,178,325,306.22
  5. Step 5: Solve for x
    x = 52,178,325,306.22/270,603.27
  6. Step 6: Final answer
    x = 192,822.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.